Roho Hybrid Elite Cushion Single Valve 18 x17 x4.25 Modular Seating Full Electric Low Bed With Half Style:Right Ear Full Electric Low Bed With Half Rails * Height adjustable sleep surface from 9 50 60 Hz Output Frequency: 27 Cover with encased comfort foam is machine washable Foam base may be wiped with damp cloth * Neoprene rubber cushion insert can be patched or repaired to extend use * Customized Jay foam base and ROHO air insert are fluid resistant * Cushion size: 18 W x17 D * Wide ranges of sizes also available to fit chair widths 14 to 24 upon request * Weight capacity: 550 lbs * HCPCS Suggested Code: E2622 * 2 year warranty